Novel polynuclear Pt, Ag acetylide complexes. Crystal and molecular structure of [PtAg2(C6F5)2(C≡CtBu)2(CH3COCH3)2]2; a hexanuclear compound containing μ3-η2-bridging acetylide ligands

Abstract

The polynuclear complexes [PtAg 2 (C 6 F 5 ) 2 (C≡CR) 2 ] n (R=Ph Ia, t Bu IIa) have been obtained by reacting either the tetranuclear (NBu 4 ) 2 [Pt 2 Ag 2 (C 6 F 5 ) 4 (C≡CR) 4 ] or (NBu 4 ) 2 [cis-Pt(C 6 F 5 ) 2 (C≡CR) 2 ] with AgClO 4 in the appropriate molar ratio or by reacting cis-Pt(C 6 F 5 ) 2 (THF) 2 (THF=tetrahydrofuran) with [Ag(C≡CR)] n (R=Ph, t Bu) (Pt/Ag ratio 1:2) in acetone at room temperature.